Improvement in harvester-crank and fin



J. KLINB. HARVESTER GRANK AND PIN.

Patented Mar. 22, 1870.

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WINTERS, OFHAR'RISBURG, PENNSYLVANIA.

Letters Patent No. 101,134, dated Marchv 22,771,810.m y

IMPROVEMENT IN HARVESTER-CRANE! AND PIN.

TheBchedule referred to in there Lettera Patent and ymaking part nf the lame 'bifurcated cnnnectin'g-rod or wheel-center, as a spindle or axle.

Second, in so constructing and arranging a conical compensating-follower with an angular central bearing in it, thatv when in place upon an angular-tipped crank-pin or spindle, it may be set to bear at ditferent points, according to the wear of the hub between it and the crank-pin or spindle base, by crowding a nut on it, which is drawn on a bolt'passing centrallyA through the crank-pin or spindle andthe follower, and virtually effects a locking of the nut in this manner. In the description of the accompanying drawings- Figure 1 is a plan of my device, mounted on a flywheel.

Figure 2 isa view of the .central bolt. Figure 3 is atop view of the conical, angular-recessed follower.

Figurey 6 isa side elevation of the same. Figure 4 is a longitudinal section of crank-pin or spindle.

Figure 5 is across-section of its seat.

Figure 7 is a cross-section of its tip or muzzle. Similar lef-ters denote similar parts in the description.

Bis its journal. j

Z is a washer under bolt-head C, to distribute -the bearing of said head. n

H is the stem of the bolt, passing centrally through the crank-pin, hub, and follower, and having a nut,

, O, von its other end.

The crank-piu seat D is a screw-socket joint in the wheelerim, or, when the crank-pin becomes .an axle or wheel-journal, seat D -is dispensed with. -In :said socket, the screw-thread is made to run right or left,

. according to the direction of motion of the wheel.

E is a cylindrical shoulder or base, to add strength to the screw-joint.

Q isa cone frustum,l tapering from base E to shaft F.

F'is a cylindrical shaft, which is the journal proper.

Said shaft F has a tip or muzzle, b, tig. 4, which is rectangular outside, as shown in g. 7.

The conical follower, tig. 6, is a hollow frusturn of a. cone, whose apex is cut away by a bore, Vdown into the frustum to about one-third of the height of the frustum, thus leaving a sharp tapering rim, a a, standing about the bore. Said bore V is of such diameter as to admit the cylindrical shaft or journal F tightly into it. Said frustum, from the 'bottom of bore -V through its remaining length, is perforated with a rectangular cut, which admits tip or muzzle b, fig.. 4, tightly.

L L', iig. 1, is a hub, with tapering sockets in its ends, whose pitch corresponds ,or is parallel to the slant sides Q N ofthe frusta, respectively. The central bore of the hub is cylindrical, and fits shaft or journal F, thereby making the bearing direct upon it, while the frusta Q N serve as keepers for the hub. This part of the huh-bore and its corresponding part of crank-pin or spindle are so made to effect a direct bearing, that there may be as little tendency as possible to force the frusta Q and N apart, and thus protect the central bolt H, which would be liable to break were the frusta bolted together without the intervening part F. By this mode of construction, the nut O, tig. 1, need only be slightly tightened to maintain the h-ub center on thejournal properly.

A The follwer N and the hub L L are of such relative length or depth that, when the hub is on its bearing against frustnm Q, the follower will enter into its other socket just far enough to permit the rim a a, at its apex, to slightly enter, like a sleeve, on shaft F, thereby not only insuring an entrance on the ,shaft when the bur O is driven, but also maintaining the follower in a steady position on the shaft or spindle. When the follower is thus entered and the nut driven properly, there is a remaining space for the shaft F to trarelse in the bore V of the follower, as shown in iig 14 lower to pass in further, to compensate for Wear or lost motion, its oblique side, N, for the same reason, being a little longer than the oblique side L' of the hub.

The cavity W, fig. 3, of the follower, and the muzzle of the crank-pin b, g. 7 are made rectangular, in order that when b is inserted in W, as shown in g. 1, the follower cannot revolve, except as the crank-piu does, and therefore there is no eort to displace the nut 0, and it is thus virtually self-locking. This is a great advantage, as a common carriage-bolt, fig. 2

can be used to hold the follower on the crank-pin, and

can be inserted loosely.

The hub L L', g. 1, has a stem, R, formed on it at right angles to its diameter, which may be employed for attaching an adjustable connecting-rod, S, by a screw-joint.- The same result may be attained by having said joint iixed, and having crank-pin, D Q F b, inserted at different radii of wheel A.

1n the foregoing specification, this device has been described as a crank-pin mounted on a fly-wheel or4 crank-arm, and its attachments as a connectingfrod or pitman. It will, however, appearplain, that it may be employed as a wheel-spindle or central support.

The wheel-hub will then coincide with what has been lh-e object of this arrangement is to adapt the folhere termed hub L L', apd the arm R will he the usual connectingrod on the rim, which, at the same j time, may be connected by this improved crank-pin. It is also plain, this device need be only slightly' modified to make an axle for conveyance-wheel. In this case the parts E Q F b become `the end of the axle, and bolt H is inserted from the other end into it, driving the followerl N with its head. In heavy machinery, the crank-pin may be formed in this manner, likewise dispensing with uut O, and driving the holt into a threaded socket or muzzle, b.

The advantages of this improvement over mere conical hgs with a central-bolt through them, are, that the connecting-rod or pitman need not be bifurcated, clamping-bars are dispensed with, and yet a more secure holdorbind of the nut is attained, while at the same time the life of the central bolt is better insured. y

Its advantages over cone or conoidal points cornbiued with springs, rocking boxes, &c., are, that the nut need not be drawn tight, leaving the journal free and yet noiseless, and with less friction and liability to break and impair.

y Its advantages overcrank-pin, sheathed in a plain or manysided sleeve, are, that it is stronger and compensates for wear.

Its advantages over all devices are, that it is almost universally applicable as crank-pin, journal, or spindle, and more durable and compact.

I desire not to claim cone points, colloidal journals, &c., simply for the ahovefe'asons; neither do I claim the use of conical o1` cylindrical washers, simply as such, with merely a through bolt interposed to connect them in a shackle limb, as such device is` not new, and is inadequate for crank-pin or, spindle use, which requires that its base or trunk end be rigidly mounted or attached, while its other end must he unsupported; asthe aforesaid device must be supported at both ends, it is therefore wholly inadequate for crank-pin or spindle, and is not an equivalent of my improvement; but my invention is a semi-coniodal and cylindrical body, surmounted with a rectangular tip or muzzle, and the compensating-follower, bored and recessed to match and act in conjunction with said body and aforesaid hub, as a superior and improved device; therefore,

l. Forming a crank-pm or spindle with conical part Q, cylindrical part or shaft F, and rectangular muzzle b, solidly massed into one body, and bored to neceive a through bolt, in the manner hereinbefore set orth.

-2. The conical compensating-follower when constructed with a perforation outwardly rectangular and inwardly cylindrical, and applied to the crank-pin or spindle without contact with the through bolt, in the manner as and for the purpose herein set forth.

JACOB KLINE.

Witnesses:

THEOPHILUS WnAvnR, DAVID HARnIs. 

